Journal
VACCINES
Volume 9, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/vaccines9101145
Keywords
SARS-CoV-2; vaccine immunogenicity; BNT162 vaccine; antibodies; neutralizing antibodies
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The study found that antibody levels and neutralizing antibodies increased significantly shortly after the BNT162b2 vaccine was administered, but rapidly decreased four months after the second dose, regardless of gender or age. Further research is needed to determine the optimal interval for SARS-CoV-2 vaccinations.
The efficacy and safety of the BNT162b2 vaccine are known, but antibodies are expected to decrease over time after vaccination. We collected blood samples from 104 fully vaccinated health care workers at 3 and 5 weeks after first vaccination and 4 months after second vaccination. Antibody titers and neutralizing antibodies were measured. In our study, both antibody titers and neutralizing antibodies increased significantly at 5 weeks after first vaccination but decreased rapidly at 4 months after second vaccination. Additionally, the results showed a significant decrease regardless of gender or age. Further studies are needed to help determine the interval of SARS-CoV-2 vaccinations.
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